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Optimized effective permittivity to improve imaging resolution of multilayered structures in the infrared
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering.
KTH, School of Information and Communication Technology (ICT), Material Physics, Semiconductor Materials, HMA.
2009 (English)In: J OPT SOC AM A-OPT IMAGE SCI, ISSN 1084-7529, Vol. 26, no 2, 365-370 p.Article in journal (Refereed) Published
Abstract [en]

Two periodic structures with different effective impedances, both comprising alternate layers of a positive and a negative permittivity material, are considered in the infrared. We find that the Fabry-Perot resonance effect periodically influences the sharpness of subwavelength focusing as the total thicknesses of the two structures increase, especially for the impedance-matched structure. On the basis of the improved multilayered structures, we design an optimized structure (i.e., the effective impedance is chosen between 0 and 1) for which a higher resolution less than lambda/12 (lambda is the wavelength in the air) can be obtained through weighing the advantages and disadvantages of the two different multilayered structures and choosing appropriate surface terminations.

Place, publisher, year, edition, pages
2009. Vol. 26, no 2, 365-370 p.
Keyword [en]
PHOTONIC CRYSTAL
Identifiers
URN: urn:nbn:se:kth:diva-12463ISI: 000264036500020Scopus ID: 2-s2.0-60949112109OAI: oai:DiVA.org:kth-12463DiVA: diva2:312934
Note
QC20100617Available from: 2010-04-26 Created: 2010-04-26 Last updated: 2010-06-17Bibliographically approved
In thesis
1. Imaging for subwavelength information with layered metamaterials
Open this publication in new window or tab >>Imaging for subwavelength information with layered metamaterials
2010 (English)Doctoral thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Stockholm: KTH, 2010. viii, 57 p.
Series
Trita-MMK, ISSN 1400-1179 ; 2010:3
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:kth:diva-12467 (URN)
Public defence
2010-04-30, Room D3, Entreplanet, Lindstedtsv 5, KTH, Stockholm, 10:00 (English)
Opponent
Supervisors
Note
QC20100617Available from: 2010-04-26 Created: 2010-04-26 Last updated: 2010-06-17Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
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